There’s a right waterproof backpack for everyone: The Velocity PS! The courier style daypack Velocity is a favorite in the ORTLIEB collection.That's new: Handy details, new color concept and perfect if you want to do without the conventional tarp looks, because Velocity PS comes in a sustainable PVC free material and you can go with the new PU coated nylon fabric.Designed with the ORTLIEB Messenger Bag in mind, this compact backpack is the perfect choice for students, pupils or commuters, for every day, for school, for sports or work. Velocity PS is sturdy and waterproof. Its trademark, the foam ventilated back, ensures carrying comfort along with breathability. Both the foam back and the ergonomic shoulder straps are improved for increased carrying comfort. The waist strap is adjustable or can be easily removed.Easy access roll top closure with hook and loop guarantees 100% waterproofness and makes packing speedy and simply. In case the hook and loop fastener wears out after years of intensive use, simply return your pack to our ORTLIEB customer service and we will give your Velocity a second life. All components can be easily exchanged or repaired which makes Velocity a sustainable and lifelong companion. What’s new on the inside? All Velocity backpacks now feature an internal zippered organizer and a padded laptop sleeve fixed at the base and top taking computers (max. 15.4”) and keeping them safe and dry.The lower edge protectors resist abrasion and wear. A bike light or helmet can be fixed to the back. As all ORTLIEB products, Velocity PS is sustainably made in Germany. 17LSpecification:Fabric: PS33,Height: 45cm,Width: 28cm,Depth: 14cm,Volume: 17L,Weight: 730g.23LSpecification:Fabric: PS33,Height: 50cm,Width: 30cm,Depth: 16cm,Volume: 23L,Weight: 790g.